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Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper binaries constant

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> So for statics, I think `static const char *` wins due to allowing
> merging (although it doesn't matter here). For non-statics, you end up
> with extra pointer constants. Those could get removed, but Linux
> doesn't
> have -fvisibility=hidden and I'm not sure how clever linkers are.
> Maybe
> setting up -fvisibility=hidden to work with monolithic non-module-
> enabled builds could actually be realistic. Expect it'd remove a fair
> bit of bloat but not sure how much would need to be marked as non-
> hidden 
> other than the userspace ABI.

-fvisibility=hidden + LTO would be really awesome though, since that
doesn't depend on the cleverness of linkers. So much that could be
ripped out of real world monolithic builds. Kinda getting off-topic now
though. LTO is pretty scary from a security perspective due to how much
worse undefined behavior that was previously harmless can get.

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[RFC 0/4] make call_usermodehelper a bit more "safe" Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 19:50 +0100
  [PATCH 1/4] kmod: make usermodehelper path a const string Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 20:00 +0100
  [PATCH 3/4] Make static usermode helper binaries constant Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 20:00 +0100
    Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 20:20 +0100
    Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Rich Felker <dalias@libc.org> - 2016-12-14 21:40 +0100
      Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Greg KH <greg@kroah.com> - 2016-12-14 22:00 +0100
        Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Greg KH <greg@kroah.com> - 2016-12-15 19:00 +0100
          Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Daniel Micay <danielmicay@gmail.com> - 2016-12-15 22:00 +0100
            Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Greg KH <gregkh@linuxfoundation.org> - 2016-12-15 22:20 +0100
              Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Daniel Micay <danielmicay@gmail.com> - 2016-12-16 01:10 +0100
                Re: [kernel-hardening] [PATCH 3/4] Make static usermode helper  binaries constant Daniel Micay <danielmicay@gmail.com> - 2016-12-16 01:30 +0100
  [RFC 4/4] Introduce CONFIG_READONLY_USERMODEHELPER Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 20:00 +0100
    Re: [RFC 4/4] Introduce CONFIG_READONLY_USERMODEHELPER Kees Cook <keescook@chromium.org> - 2016-12-14 21:40 +0100
      Re: [RFC 4/4] Introduce CONFIG_READONLY_USERMODEHELPER Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 22:10 +0100
  [PATCH 2/4] drbd: rename "usermode_helper" to "drbd_usermode_helper" Greg KH <gregkh@linuxfoundation.org> - 2016-12-14 20:00 +0100
  Re: [kernel-hardening] [RFC 0/4] make call_usermodehelper a bit more  "safe" Mark Rutland <mark.rutland@arm.com> - 2016-12-14 20:30 +0100
    Re: [kernel-hardening] [RFC 0/4] make call_usermodehelper a bit more "safe" Kees Cook <keescook@chromium.org> - 2016-12-14 21:20 +0100
  Re: [kernel-hardening] [RFC 0/4] make call_usermodehelper a bit more "safe" "Jason A. Donenfeld" <Jason@zx2c4.com> - 2016-12-14 22:30 +0100
    Re: [kernel-hardening] [RFC 0/4] make call_usermodehelper a bit more  "safe" Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-12-15 00:20 +0100
  Re: [RFC 0/4] make call_usermodehelper a bit more "safe" NeilBrown <neilb@suse.com> - 2016-12-16 02:10 +0100
    Re: [RFC 0/4] make call_usermodehelper a bit more "safe" Greg KH <gregkh@linuxfoundation.org> - 2016-12-16 14:00 +0100
      Re: [RFC 0/4] make call_usermodehelper a bit more "safe" Jiri Kosina <jikos@kernel.org> - 2016-12-19 14:40 +0100
        Re: [RFC 0/4] make call_usermodehelper a bit more "safe" Greg KH <gregkh@linuxfoundation.org> - 2016-12-20 10:30 +0100
          Re: [RFC 0/4] make call_usermodehelper a bit more "safe" Jiri Kosina <jikos@kernel.org> - 2016-12-20 11:30 +0100
            Re: [RFC 0/4] make call_usermodehelper a bit more "safe" Jiri Kosina <jikos@kernel.org> - 2016-12-20 11:40 +0100
              Re: [RFC 0/4] make call_usermodehelper a bit more "safe" Greg KH <gregkh@linuxfoundation.org> - 2016-12-20 11:50 +0100

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